According to Gene Munster, a senior research analyst at Piper Jaffray, Apple’s exclusive deal with AT&T might not last even a year.

Do I hear cheers? oh…yes I do. This is a great news for customers as well as Apple. This would result in further increase in iPhone sales and maybe less jailbreakig. In other countries Apple has already ended this exclusive thingy.
Speculation is that the exclusivity contract with AT&T [...]